Available diameters on integrated headsets?

On Sep 9, 12:38 pm, dabac <dabac.2wn...@no-

mx.forums.cyclingforums.com said:

hi guys,

The short question is:how many different diameters can I find
integrated headsets in?

The long story behind is as follows:when I built a bike around an
unknown frame some years ago I wasn't aware that there was such a thing
as an integrated headset, so when the stock 1 1/8 didn't fit in the head
tube I cut a couple of spacers/bushings on the lathe and stuck it all
together.
Now, somewhat better informed, (and in need of a 1 1/8 for another
bike) I'm thinking of replacing the 1 1/8 with an integrated set, but I
can't remember the i.d. of the head tube.
Can I buy 'this one' (http://tinyurl.com/22rnk4) for instance, and
expect it to fit? Or do I have to do an explanatory disassembly to find
out the i.d. of the head tube before I buy an integrated headset?

--
dabac

there are 2 main ones for 1 1/8 steerers (is/cane creek/"integrated"
and hiddenset), then there's columbus, then there's internal headsets
such as zerostack, then there are some oddballs. if you remember there
being angled bearing seats inside the ht, then it's one of the first
2.
the various standards do have standard headtube od's attached to them,
but of course it's not really required at all for a mfg to stick to
this (although they do for the most part) and also, 45mm is used for
hiddenset and 1 1/8 IS, so it could be either if it's 45. but
zerostack 1 1/8 is 50. these numbers can mostly be found here,
although columbus and some others are missing: www.sutherlandsbicycle.com/Chapter12.pdf

dabac said:

hi guys,

The short question is:how many different diameters can I find
integrated headsets in?

The long story behind is as follows:when I built a bike around an
unknown frame some years ago I wasn't aware that there was such a thing
as an integrated headset, so when the stock 1 1/8 didn't fit in the head
tube I cut a couple of spacers/bushings on the lathe and stuck it all
together.
Now, somewhat better informed, (and in need of a 1 1/8 for another
bike) I'm thinking of replacing the 1 1/8 with an integrated set, but I
can't remember the i.d. of the head tube.
Can I buy 'this one' (http://tinyurl.com/22rnk4) for instance, and
expect it to fit? Or do I have to do an explanatory disassembly to find
out the i.d. of the head tube before I buy an integrated headset?

Short answer= Too Many!
If your local shop has the excellent FSA Stainless Headset Guide,
consult them. It's a well designed tool and quick to use. The various
formats and nomenclatures certainly are confusing!
--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971

Nate Knutson said:

.. if you remember there being angled bearing seats inside the ht, ...

As far as I can remember the reamed seat in the seat tube had a fairly shallow lip and I don't recall it being angled.

[quote="Nate Knutson"]..there are [b]2 main ones[/] .[/QUOTE]

2 as in:
1) cane creek/"integrated" and hiddenset

2) columbus

...or 2 as in something else?

Nate Knutson said:

..... then there are some oddballs.

Nate Knutson said:

...the various standards do have standard headtube od's attached to them, .. 45mm is used for
hiddenset and 1 1/8 IS, so it could be either if it's 45.

Nate Knutson said:

..these numbers can mostly be found here,
although columbus and some others are missing: www.sutherlandsbicycle.com/Chapter12.pdf

A Muzi said:

Short answer= Too Many!

Ah well, exploratory disassembly it is then.

On Sep 10, 2:49 am, dabac <dabac.2wo...@no-
[quote="mx.forums.cyclingforums.com"]Nate Knutson Wrote:> .. if you remember there being angled bearing seats inside the ht, ...

As far as I can remember the reamed seat in the seat tube had a fairly
shallow lip and I don't recall it being angled.

[quote="Nate Knutson"]..there are [b]2 main ones[/] .[/quote]

2 as in:
1) cane creek/"integrated" and hiddenset

2) columbus

..or 2 as in something else?[/quote]

I meant that cane creek and hiddenset are the 2 main ones. Columbus is
uncommon, and is actually not really an integrated system, I kinda
just stuck it in there. I also forgot about the TH industries 36x36
integrated standard. =P

Quoted message said:

Nate Knutson said:

..... then there are some oddballs.

Looking more and more likely 😠

Nate Knutson said:

...the various standards do have standard headtube od's attached to
them, .. 45mm is used for
hiddenset and 1 1/8 IS, so it could be either if it's 45.

It is, well 44,5 incl powder coat according to my caliper.

Nate Knutson said:

..these numbers can mostly be found here,
although columbus and some others are missing:
www.sutherlandsbicycle.com/Chapter12.pdf

First the page kept loading as a blank, but it finally came through.
Good stuff.

dabac said:

Ah well, exploratory disassembly it is then.

Bit the bullet yesterday and removed the headset. The caliper says 37.3 mm head tube i.d. Closest match in the Sutherland's handbook seems to be the 37.5 1" JIS / Pro threadless low-profile.

Could be right, the origins of this frame is shrouded in mystery.

Dang.

OK, so I've got a 37.5 i.d. head tube and a 1 1/8" fork - can I find a HS that would either let me get rid of the bushings and/or let me reduce the stack height?